Under Indian law, the Goods and Services Tax (GST) applies to e-commerce transactions in the following ways: GST on Supply of Goods and Services: E-commerce transactions, whether involving goods or services, are subject to GST. The supply of goods and services through e-commerce platforms is treated as a taxable supply under GST. E-commerce Operators' Responsibility: Under GST, e-commerce operators (like Amazon, Flipkart, etc.) are considered the "suppliers" for certain transactions. They are required to collect and remit GST on behalf of the sellers on their platform. This is known as the Tax Collection at Source (TCS) mechanism. Tax Collection at Source (TCS): E-commerce operators are required to collect a certain percentage of the sale price from sellers as GST and remit it to the government. The rate for TCS depends on the type of goods or services sold: For goods: The e-commerce operator collects 1% GST from the seller. For services: The rate of TCS is 5% for services under the reverse charge mechanism (RCM). GST Registration for E-commerce Sellers: Sellers operating on e-commerce platforms must register for GST if their aggregate turnover exceeds the prescribed threshold limit. Even if their turnover is below the threshold, they may voluntarily opt for registration to claim input tax credits (ITC). Input Tax Credit (ITC): Sellers can claim ITC on GST paid for inputs, input services, and capital goods used to supply goods and services. However, if the GST on sales is collected by the e-commerce operator, the seller cannot directly claim ITC unless registered for GST. Reverse Charge Mechanism (RCM): In some cases, the liability to pay GST may fall on the recipient rather than the supplier. Under the reverse charge mechanism, the e-commerce operator may be required to pay GST for services provided to the e-commerce platform. GST Filing and Compliance: E-commerce operators must file GST returns on behalf of their sellers, and they are responsible for ensuring that taxes are paid correctly. They need to report all e-commerce transactions under their GST return. In summary, GST applies to e-commerce transactions based on the nature of the goods or services, with responsibilities for both the e-commerce operators and sellers in compliance with GST provisions.